A069659 Largest n-digit perfect power.

9, 81, 961, 9801, 99856, 998001, 9998244, 99980001, 999950884, 9999800001, 99999515529, 999998000001, 9999995824729, 99999980000001, 999999961946176, 9999999800000001, 99999999989350756, 999999998000000001

Offset: 1

Author

Amarnath Murthy, Apr 04 2002

Keywords

• nonn
• base

Comments

Are there terms which are not perfect squares? In other words, when (if ever) does this differ from A061433.

Trivially, 81 is both a square and a fourth power. Assuming my program works, there are no differences in the first 1500 terms. - Hans Havermann, Aug 06 2006

Crossrefs

Cf. A061433.

Extensions

More terms from Ryan Propper, Oct 10 2005